{"product_id":"drill-america-x-cobalt-heavy-duty-drill-bit-pack-of-6-tough-metal","title":"Drill America X Cobalt Heavy Duty Drill Bit Pack of 6 - Tough Metal","description":"\u003cp\u003eIn this review of the Drill America X Cobalt Heavy Duty Drill Bit pack, the bottom line is simple: these bits are built for anyone who needs reliable drilling into hard metals. The review finds them most valuable for metalworkers, fabrication shops, and serious DIYers because the cobalt steel composition and jobber length deliver higher heat resistance and longer life than standard HSS bits. The pack of 6 offers immediate replacement depth for frequent use, and the overall performance stands out when cutting stainless steel, nickel alloys, and other tough materials.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCobalt steel composition:\u003c\/strong\u003e provides higher red hardness so the bits tolerate higher speeds and stay sharper when drilling hard alloys.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGold oxide surface:\u003c\/strong\u003e a thinner oxide finish reduces corrosion without altering the cutting geometry, preserving sharpness for clean holes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRound shank:\u003c\/strong\u003e fits a wide variety of chucks and toolholding systems for easy changeover on drills and drill presses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral flute design:\u003c\/strong\u003e right-hand cut spirals evacuate chips up and out of the hole to reduce clogging on deep or slow feeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufactured to NAS 907:\u003c\/strong\u003e aerospace-level production standards ensure consistent geometry and repeatable performance across the set.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThese drill bits are aimed at professionals and experienced hobbyists who frequently drill high tensile materials like PH stainless steel, inconel, and titanium or who need longer life than typical HSS bits provide. Shops doing repair, fabrication, or construction where downtime and bit replacement cost matter will see the benefit.\u003c\/p\u003e\n\u003cp\u003eCasual users who only drill occasional soft materials or wood may find standard HSS bits more economical, since the cobalt advantages show up most when tackling tougher metals. Users requiring specialty coatings beyond gold oxide for extreme wear resistance should look at fully coated carbide options instead.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExcellent durability and sharpness when cutting high tensile metals, reducing regrinds and replacements.\u003c\/li\u003e\n\u003cli\u003eGood value for money given the longer life compared with standard HSS bits according to customer experience.\u003c\/li\u003e\n\u003cli\u003eRound shanks and jobber length make these bits versatile for hand drills and press setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe gold oxide finish is thin and performs similarly to uncoated bits, so it does not provide the extra wear protection of full hard coatings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eDrill America X Cobalt Heavy Duty Drill Bit, Pack of 6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCobalt steel (heat resistant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Finish\u003c\/td\u003e\n\u003ctd\u003eGold oxide (thin oxide treatment)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShank Type\u003c\/td\u003e\n\u003ctd\u003eRound shank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlute Direction\u003c\/td\u003e\n\u003ctd\u003eRight-hand spiral to evacuate chips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003eJobber length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturing Standard\u003c\/td\u003e\n\u003ctd\u003eNational Aerospace Standard 907\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThese Drill America cobalt jobber bits are a strong choice for metalworkers and shops that need dependable drilling into stainless, nickel alloys, and other tough materials. They deliver durable performance and good value when compared to standard HSS bits, though buyers seeking heavy-duty coating protection may prefer coated carbide options for extreme wear conditions.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAre these bits good for stainless steel?\u003c\/strong\u003e\u003cbr\u003eYes, the cobalt steel and higher red hardness make them well suited for drilling stainless steel and other high tensile alloys.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill the gold oxide coating prevent rust?\u003c\/strong\u003e\u003cbr\u003eThe gold oxide is a thin surface treatment that resists minor corrosion but mainly preserves cutting geometry rather than providing heavy-duty wear protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use these in a hand drill?\u003c\/strong\u003e\u003cbr\u003eYes, the round shank fits most hand drill chucks and drill presses, making them versatile for shop and field use.\u003c\/p\u003e","brand":"Drill America","offers":[{"title":"Default Title","offer_id":48232440987867,"sku":"B00FX70FTG","price":63.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71xcTcJaimL._SL1500_9cd2342b-8248-4818-bcc6-c76a49a8b81b.jpg?v=1770809323","url":"https:\/\/gearmusthave.com\/products\/drill-america-x-cobalt-heavy-duty-drill-bit-pack-of-6-tough-metal","provider":"GearMustHave","version":"1.0","type":"link"}